void
BitmapImage::OnPropertyChanged (PropertyChangedEventArgs *args, MoonError *error)
{
if (args->GetProperty ()->GetOwnerType () != Type::BITMAPIMAGE) {
BitmapSource::OnPropertyChanged (args, error);
return;
}
if (args->GetId () == BitmapImage::UriSourceProperty) {
Uri *uri = args->GetNewValue () ? args->GetNewValue ()->AsUri () : NULL;
Abort ();
if (Uri::IsNullOrEmpty (uri)) {
SetBitmapData (NULL, false);
} else if (uri->IsInvalidPath ()) {
if (IsBeingParsed ())
MoonError::FillIn (error, MoonError::ARGUMENT_OUT_OF_RANGE, 0, "invalid path found in uri");
SetBitmapData (NULL, false);
} else {
AddTickCall (uri_source_changed_callback);
}
} else if (args->GetId () == BitmapImage::ProgressProperty) {
if (HasHandlers (DownloadProgressEvent))
Emit (DownloadProgressEvent, new DownloadProgressEventArgs (GetProgress ()));
}
NotifyListenersOfPropertyChange (args, error);
}
void
BitmapImage::PixmapComplete ()
{
MoonPixbuf *pixbuf;
SetProgress (1.0);
if (!loader) {
if (!moon_error)
moon_error = new MoonError (MoonError::EXCEPTION, 4001, "no loader");
goto failed;
}
loader->Close (moon_error == NULL ? &moon_error : NULL);
if (moon_error)
goto failed;
if (!(pixbuf = loader->GetPixbuf ())) {
moon_error = new MoonError (MoonError::EXCEPTION, 4001, "failed to create image data");
goto failed;
}
SetPixelWidth (pixbuf->GetWidth ());
SetPixelHeight (pixbuf->GetHeight ());
// PixelFormat has been dropped and only Pbgra32 is supported
// http://blogs.msdn.com/silverlight_sdk/archive/2009/07/01/breaking-changes-document-errata-silverlight-3.aspx
// not clear if '3' channel is still supported (converted to 4) in SL3
if (pixbuf->GetNumChannels () == 4) {
SetBitmapData (premultiply_rgba (pixbuf), true);
} else {
SetBitmapData (expand_rgb_to_argb (pixbuf), true);
}
Invalidate ();
delete loader;
loader = NULL;
if (HasHandlers (ImageOpenedEvent))
Emit (ImageOpenedEvent, new RoutedEventArgs ());
return;
failed:
ImageErrorEventArgs *args = NULL;
if (HasHandlers (ImageFailedEvent))
args = new ImageErrorEventArgs (*moon_error);
CleanupLoader ();
if (args)
Emit (ImageFailedEvent, args);
}
void
BitmapImage::UriSourceChanged ()
{
Surface *surface = Deployment::GetCurrent ()->GetSurface ();
Application *app = Application::GetCurrent ();
Uri *uri = GetUriSource ();
if (surface == NULL) {
SetBitmapData (NULL, false);
return;
}
if (app && uri) {
if (get_res_aborter)
delete get_res_aborter;
get_res_aborter = new Cancellable ();
app->GetResource (GetResourceBase(), uri, resource_notify, pixbuf_write, policy,
HttpRequest::DisableFileStorage, get_res_aborter, this);
}
}
gpointer
WriteableBitmap::InitializeFromBitmapSource (BitmapSource *source)
{
cairo_t *cr;
if (!source)
return NULL;
SetPixelHeight (source->GetPixelHeight ());
SetPixelWidth (source->GetPixelWidth ());
image_surface = cairo_image_surface_create (CAIRO_FORMAT_ARGB32, GetPixelWidth (), GetPixelHeight ());
cr = cairo_create (image_surface);
cairo_set_source_surface (cr, source->GetImageSurface (), 0, 0);
cairo_paint (cr);
cairo_destroy (cr);
SetBitmapData (cairo_image_surface_get_data (image_surface), false);
return GetBitmapData ();
}
